1. Fire hydrants shall be rated for a working pressure of 250 Psig. (1725 kPa). 2. Fire hydrants shall be of the compression type, opening against the pressure and closing with the pressure. Two valve openings shall be offered. They shall have a 5-1/4" main valve opening and a minimum inside lower/upper barrel diameter (I.D.) of 7" to ensure maximum flow performance. Pressure loss at 1,000 GPM shall not exceed 2.50psi through a 4.5" pumper nozzle. They shall have 4-1/2" main valve opening and a minimum inside/upper barrel diameter (I.D.) of 6" to ensure maximum flow performance. Pressure loss at 1,000 GPM shall not exceed 4.75psi through a 4.5 pumper nozzle. 3. The Fire hydrant shall be painted silver. Fire hydrants shall be three-way in design, having one 4 %" NST pumper nozzle and two 21/2" NST hose nozzles. The nozzles shall thread counterclockwise into hydrant barrel utilizing O-ring seals. A stainless-steel nozzle lock shall be in place to prevent inadvertent nozzle removal...
